Applying for PAN card (India) for a US citizen

I am trying to find out what are the documents to get attested by
the Indian consulate in San Francisco and the procedure for this.
Later on I will send this documents to Indian tax department along with
the application for PAN card.

Looks like I need to get my US passport and US bank statements attested
by Indian consulate. Because I am an US citizen, do I need to get these
first attested by U.S State Department in DC, before sending to
Indian consulate ?

The instructions in SFO consulate web page are not clear.
Has anyone gone through this process ?